This Matrix Array 16 Keys 4*3 Switch Keypad Module for Arduino is a great addition to any electronic setup. With its compact size and easy-to-use keypad, it is perfect for those who want to add a layer of convenience to their Arduino projects. The module is designed to work seamlessly with Arduino and other microcontrollers, making it a versatile choice for a variety of applications. Whether you're looking to create a simple calculator or a more complex data entry system, this keypad module is the perfect choice. So why wait? Order yours today and experience the convenience of a high-quality electronic keypad!